Paving blocks



Sept. 23 1924.

M. Av. ALuclzHlcl-l ET A1.

PAVING BLOCKS Filed April 5, 1922 MIL() V. LITCHICI'I' ANI) LAWRENCE PAV ING Application filed April 3,

.To all yinfront t may concern.'

Be it known that we, Mino V. LUCI-iron, a citizen of lervia, and LAWRENCE OsTnnMAN, a citizen of Yugoslavia (who have declarec their intention of becoming citizens of the United States),I and residents of the city of Chicago, in. the county of Cook and State of llllinois, have invented certain new and useful improvements in Paving Blocks; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates to paving blocks, preferably for use in constructing side walks, iioors or the like.

lt is an object of this invention to provide interlitting blocks adapted to be interloclied whereby the liability of sagging and separation of the blocks is prevented land a smooth upper surface is always maintained.

lt is broadly an object of this invention to provide paving` bloclrs that 1n utually support each other, whereby individual thereof is prevented.

With these and other objectsr in view, which will become more apparent in the 'following description and disclosures, this invention comprises the novel structure and. combinations hereinafter described and more particularly pointed out and defined in the appended claims.

ln the accompanying drawings, whiiih illustrate a preferred en'ibodiment of this invention and in which similar reference numerals refer to 'similar features in the different views:

Figure l is a perspective view of a plurality of assembled blocks involving this invention.

Figure 52 is a bottom plan View of the asscn'ibled blocks.

Figure 3 Ais a top plan view vof an individual block with part brolren away.

Figure l is a fragmentary section on the line lf-l of Figure 2 upon an enlarged scale.

Figure is line .i-- of scale.

Figure tl a fraginentarv section illustrating the method of assembling the blocks.

ln referring` now to the drawings which illustrate one embodiment of this invention,

a fragmentary section on the Figiire l upon an enlarged Sli'lES PATENT F F l C E.

OSTERMAN, OF CHICAGO, ILLINOIS.

BLOCKS.

1922. Serial NO. 549,003.

the reference numeral 1 designates an individual block preferably moulded from concrete or the like, having a metal reinforcing net work 2 embedded therein at 'a short distance below the upper surface thereof. A plurality of such blocks are adapted to be joined and interlocked together in constructing a pavement or licor. For this purpose, the ents of the blocks are rabbeted where they are intended to be joined, and mutually cooperating interlocking members 8 are bolted or secured in the rabbeted ends. In the present instance, the interlocking members 3 consist of metal strips bolted or secured in. some appropriate way in suitable recesses extending` upwardly from the bottom ofthe blocks; the projecting end of each strip being formed with a lug'beveled upon its inner side as shown in Figures 4. and e. These interlocking members 3 should be vertically spaced in adjoining or adjacent blocks and reversely arranged so that the lower bevelled lug of one block may engage under the bevelled lug of the adjacent bloclr for holding the blocks together with' their upper surfaces in a common horizontal plane.

The cooperating interlocking members are preferably ar 'anged so that the outer end of one, preferably the higher one, is substantially flush with the inner surface of the rabbeted wall, while the outer end of the other member projects beyond the end wall a distance equal to the bevelled lu as shown in Figures /l and 6, the latter being preferably secured in the plane of the overhanging shoulder formed by the rabbet, and a groove l may be formed in the ledge of the adjacent block just below the interlocking` member 3 thereof so that a tilting position of the block having the projecting` interlocking members will allow the bevelled lug thereof to engage under the bevelled lug of the higher interlockingmember of the adjacent bloclr as shown in Figure G. Then by bringing the adjacent blocks into the same horizontal plane as shown in Figure l, they will become interlocked from separation by the coacting hook-shaped lugs.

The aforedescribed construction is such that the adjacent blocks mutually support each other. rlhis is readily apparent in Figures 4l and 6 which show the right hand block resting with its overhanging shoulderl in the rabbet of the left hand block, so that pressure applied upon the upper surface of the rightv hand block will be transmitted to the left hand block preventing the right hand block from sagging with relation to the left hand block. On the other hand, downward pressure upon the left hand block will be transmitted from its interlocking mem ber '3 to the interlocking member 3 of the adjacent or right hand block upon which it rests preventing the left hand block from sagging in relation to the right hand block. It'will of course be understood that all the contacting edges or sides of the blocks are similarly connected and Supported, as shown in Figure 2. However the outer edges of the marginal blocks that border a side walk or flooring are smooth and not rabbeted as is obvious.

The aforedescribed blocks are adapted to be set in a base formed ot' concrete before it becomesset or hardened, and to cause said blocks to firmly combine/with the concrete,

, the base of each block may be provided with depending margins 5 allowing the Concrete to lill the central hollow spaces defined by the margins whereby the blocks become securely embedded in thesupporting base.

These blocks are intended to be moulded land finished in a factory and vended as an article of manufacture to be used in the construction of side walks or floors which demand a smooth and level surface. The use oi such blocks dispenses with the grinding o1' scrubbing process that is now required to finish concrete or other floors.

le are aware that numerous details of construction may be varied through a wide range without departing from the principles oi this invention, and we therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

le claim as our invention:

l. A pavement, comprising a plurality of rabbeted blocks, each having hooked 111cmbcrs projecting from the rabbets thereof and in the plane of the blocks, the hooks of each block adapted to intercngage those of adjacent blocks to lock the same against separation in the plane of the pavement.

2. A pavement, comprising a plurality ofi rabbeted blocks, each having hooked members riveted therein and projecting from the rabbets thereof and in the plane of the blocks, the hooks of each block adapted to interengage those adjacent blocks to lock the same against separation in the plane ofi the pavement.

In testimony whereof, we have hereunto subscribed our names in the presence of two subscribing witnesses:

MILO V. LUCHICH. LAVRENCE OQTERMAN. WTitnesses CHARLES lV. HILLS, Jr., JAMES M. OBRIEN. 

